Walnuts have a high nutritional value, and it is generally best to eat about 5 a day, depending on your own situation, not the more you eat the better. Walnuts are rich in phospholipids, which can nourish brain cells, suitable for young students and frequent brain workers, appropriate consumption can reduce stress and play a role in health care. Walnuts contain more unsaturated fatty acids, which can soften blood vessels to a certain extent and prevent atherosclerosis. At the same time, walnuts have certain coughing and asthma effect, suitable for some chronic bronchitis and asthma patients in remission period for dietary therapy, or to reduce symptoms during the attack period. Walnuts also contain zinc, manganese, chromium and other trace elements that are indispensable to the human body and are very beneficial to the body when consumed regularly. It is important to note that walnuts contain fatty acids, so eating too many of them can easily cause obesity and should be consumed in moderation. If you have gastrointestinal disorders and fire, it is not recommended to eat them to avoid aggravating the symptoms.